Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for wireless communication at a user equipment (UE), comprising: receiving, from a base station, downlink control information that comprises an indication of an in-band emission (IBE) mask for the UE; mapping the indicated IBE mask to a maximum power reduction; determining, based at least in part on the maximum power reduction, a transmission power for the UE; and transmitting, according to the determined transmission power and the received downlink control information, an uplink transmission to the base station.
2. The method of claim 1 , wherein receiving the downlink control information comprises: receiving the downlink control information that comprises an indication of the IBE mask based at least in part on a number of UEs scheduled by the base station for uplink transmissions during a same transmission time interval.
This invention relates to wireless communication systems, specifically improving downlink control information (DCI) transmission efficiency in scenarios where multiple user equipment (UE) devices are scheduled for uplink transmissions during the same transmission time interval (TTI). The problem addressed is the inefficiency in DCI signaling when a base station schedules multiple UEs simultaneously, leading to increased overhead and potential delays. The invention describes a method for optimizing DCI by incorporating an Inter-Bearer Efficient (IBE) mask, which is dynamically adjusted based on the number of UEs scheduled for uplink transmissions in the same TTI. The IBE mask reduces redundant information in the DCI by selectively enabling or disabling certain fields based on the scheduling context. For example, if only a few UEs are scheduled, the IBE mask may allow more detailed control information, whereas if many UEs are scheduled, it may suppress non-essential fields to conserve bandwidth. The base station generates the IBE mask by analyzing the scheduling load and determines the optimal configuration to minimize DCI overhead while maintaining reliable communication. The UE receives the DCI, interprets the IBE mask, and processes only the relevant fields, improving efficiency. This approach ensures that DCI remains compact and adaptable to varying network conditions, enhancing overall system performance.
3. The method of claim 2 , wherein the indicated IBE mask is proportional to the number of UEs scheduled by the base station for uplink transmissions during the same transmission time interval.
This invention relates to wireless communication systems, specifically improving interference management in uplink transmissions. The problem addressed is reducing interference between multiple user equipment (UE) devices transmitting simultaneously to a base station during the same transmission time interval (TTI). Existing systems may suffer from excessive interference when multiple UEs transmit concurrently, degrading signal quality and throughput. The invention provides a method for dynamically adjusting an interference-based exclusion (IBE) mask used by UEs to manage uplink transmissions. The IBE mask determines which frequency resources a UE can use to avoid interfering with other UEs. The key improvement is that the IBE mask is proportional to the number of UEs scheduled by the base station for uplink transmissions during the same TTI. When more UEs are scheduled, the IBE mask is adjusted to allocate resources more efficiently, reducing collisions and interference. The base station schedules the UEs and determines the appropriate IBE mask based on the number of active UEs. Each UE then applies the received IBE mask to select its transmission resources, ensuring fair and efficient use of the available spectrum. This dynamic adjustment helps maintain reliable communication even in dense network environments with high uplink traffic. The method ensures that as the number of transmitting UEs increases, the IBE mask scales proportionally to mitigate interference while maximizing resource utilization.
4. The method of claim 1 , wherein receiving the downlink control information comprises: receiving the downlink control information that comprises an indication of the IBE mask based at least in part on an estimation of a level of IBE interference for a transmission time interval of the uplink transmission proportional to a number of UEs scheduled by the base station for uplink transmissions during the transmission time interval.
5. The method of claim 4 , wherein mapping the indicated IBE mask to the maximum power reduction comprises: mapping the indicated IBE mask to the maximum power reduction according to a predetermined mapping.
6. The method of claim 1 , wherein receiving the downlink control information further comprises: receiving a grant of resources for the uplink transmission.
7. The method of claim 6 , wherein the grant of resources indicates frequency resources for the uplink transmission allocated based at least in part on a position of the UE relative to one or more other UEs.
Wireless communication resource allocation. This invention addresses the challenge of efficiently allocating uplink frequency resources in a wireless network to user equipment (UE). Specifically, it describes a method where the grant of resources for uplink transmission is determined by considering the geographical position of a UE in relation to other UEs. This positional information is used as a factor, at least in part, in deciding which frequency resources are allocated to that UE for its uplink transmissions. This can enable optimized resource utilization by considering spatial relationships between users.
8. The method of claim 1 , wherein determining the transmission power for the UE comprises: determining the transmission power for the UE based at least in part on a maximum output power and the maximum power reduction.
9. The method of claim 1 , wherein the uplink transmission comprises a multi-user uplink transmission.
A system and method for wireless communication involves managing uplink transmissions in a multi-user environment. The technology addresses the challenge of efficiently coordinating multiple devices transmitting data to a central node, such as a base station, while minimizing interference and optimizing resource allocation. The method includes a step where an uplink transmission is structured as a multi-user uplink transmission, allowing multiple devices to share the same communication resources simultaneously. This approach improves spectral efficiency and reduces latency by enabling concurrent data transfers from different users. The system may also include mechanisms for scheduling, power control, and interference management to ensure reliable communication in dense user scenarios. By supporting multi-user uplink transmissions, the technology enhances network capacity and supports higher data rates in wireless communication systems. The method may be applied in various wireless standards, including 5G and beyond, where efficient uplink resource utilization is critical for supporting a large number of connected devices.
10. A method for wireless communication at a base station, comprising: determining an in-band emission (IBE) mask for a user equipment (UE), the UE being one of a plurality of UEs to be scheduled by the base station for uplink transmissions during a transmission time interval; transmitting, to the UE, downlink control information that comprises an indication of the determined IBE mask that is mappable to a maximum power reduction for an uplink transmission by the UE; and receiving the uplink transmission having a transmission power based on the maximum power reduction.
This invention relates to wireless communication systems, specifically addressing power control for uplink transmissions in cellular networks. The problem solved is managing interference and signal quality by controlling the maximum power reduction (MPR) applied to user equipment (UE) transmissions, particularly in scenarios where multiple UEs are scheduled simultaneously. The method involves a base station determining an in-band emission (IBE) mask for a specific UE, which is one of several UEs scheduled for uplink transmissions during a given time interval. The IBE mask defines spectral emission limits to reduce interference. The base station then transmits downlink control information to the UE, including an indication of the determined IBE mask. This indication is designed to be directly mappable to a maximum power reduction value that the UE should apply to its uplink transmission. The UE adjusts its transmission power accordingly, ensuring compliance with the IBE mask while maintaining signal integrity. The base station subsequently receives the uplink transmission, which has been power-adjusted based on the specified MPR. This approach allows dynamic and efficient power control, optimizing network performance by balancing interference mitigation and transmission quality. The method ensures that UEs adhere to spectral emission constraints while maintaining reliable communication links.
11. The method of claim 10 , wherein determining the IBE mask for the UE comprises: identifying a number of the plurality of UEs to be scheduled by the base station during the transmission time interval; and determining the IBE mask for the UE based at least in part on the identified number.
12. The method of claim 11 , wherein the IBE mask is proportional to the number of the plurality of UEs to be scheduled by the base station during the transmission time interval.
13. The method of claim 10 , wherein determining the IBE mask for the UE comprises: estimating a level of IBE interference during the transmission time interval proportional to a number of the plurality of UEs scheduled by the base station for uplink transmissions during the transmission time interval; and determining the IBE mask for the UE based at least in part on the estimated level of IBE interference.
14. The method of claim 10 , further comprising: allocating frequency resources for the UE based at least in part on a position of the UE relative to at least one of the plurality of UEs, wherein the transmitted downlink control information indicates the allocated frequency resources.
Wireless communication systems, particularly those using multiple user equipment (UE) devices, face challenges in efficiently allocating frequency resources to avoid interference and optimize performance. Existing systems may not adequately consider the spatial positioning of UEs when assigning frequency resources, leading to suboptimal resource utilization and potential signal degradation. This invention addresses these issues by dynamically allocating frequency resources to a UE based on its position relative to other UEs in the network. The method involves determining the spatial relationship between the UE and at least one other UE, then assigning frequency resources accordingly. The allocation is communicated to the UE via downlink control information, which specifies the allocated frequency resources. This approach ensures that frequency resources are distributed in a manner that minimizes interference and maximizes spectral efficiency, particularly in dense deployment scenarios. The system may use positioning data from the UE or other network elements to inform the allocation process. By integrating spatial awareness into resource allocation, the invention improves overall network performance and user experience.
15. The method of claim 10 , further comprising: identifying, from the plurality of UEs, a set of UEs associated with a receive beam of the base station, the UE being one of the set of UEs; and allocating frequency resources for the UE that are non-contiguous with frequency resources allocated to any other UE of the set of UEs.
This invention relates to wireless communication systems, specifically methods for managing frequency resource allocation in a base station serving multiple user equipment (UE) devices. The problem addressed is interference and resource contention when multiple UEs share the same receive beam from a base station, particularly in scenarios like millimeter-wave (mmWave) communications where beamforming is critical. The method involves identifying a group of UEs that are all associated with a single receive beam of the base station. For each UE in this group, frequency resources are allocated in a way that ensures no two UEs in the group share contiguous frequency resources. This non-contiguous allocation helps reduce interference between UEs that are spatially close but served by the same beam, improving overall communication quality and reliability. The approach may also include determining the receive beam based on signal measurements, such as reference signal received power (RSRP) or signal-to-interference-plus-noise ratio (SINR), to ensure optimal beam selection. The frequency resources may be allocated from a shared pool, with constraints to prevent adjacent allocations to UEs in the same beam group. This method is particularly useful in dense deployment scenarios where multiple UEs may be served by the same beam, such as in urban environments or high-traffic areas.
16. The method of claim 15 , wherein each UE of the set of UEs is allocated frequency resources that are non-contiguous with frequency resources allocated for any other UE of the set of UEs.
17. The method of claim 10 , further comprising: identifying that the UE and a second UE of the plurality of UEs are separated by an angular distance that is less than or equal to a threshold angular distance; and allocating, based at least in part on the identification, first frequency resources for the UE that are non-contiguous with second frequency resources allocated for the second UE.
18. The method of claim 10 , further comprising: identifying that the UE and a second UE of the plurality of UEs are separated by an angular distance that is greater than or equal to a threshold angular distance; and allocating, based at least in part on the identification, first frequency resources for the UE that are contiguous with second frequency resources allocated for the second UE.
19. An apparatus for wireless communication at a user equipment (UE), comprising: a processor, memory coupled with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: receive, from a base station, downlink control information that comprises an indication of an in-band emission (IBE) mask for the UE; map the indicated IBE mask to a maximum power reduction; determine, based at least in part on the maximum power reduction, a transmission power for the UE; and transmit, according to the determined transmission power and the received downlink control information, an uplink transmission to the base station.
20. The apparatus of claim 19 , wherein the instructions are further executable by the processor to receive the downlink control information by being executable by the processor to: receive the downlink control information that comprises an indication of the IBE mask based at least in part on a number of UEs scheduled by the base station for uplink transmissions during a same transmission time interval.
21. The apparatus of claim 19 , wherein the instructions are further executable by the processor to receive the downlink control information by being executable by the processor to: receive the downlink control information that comprises an indication of the IBE mask based at least in part on an estimation of a level of IBE interference for a transmission time interval of the uplink transmission proportional to a number of UEs scheduled by the base station for uplink transmissions during the transmission time interval.
22. The apparatus of claim 19 , wherein the instructions are further executable by the processor to receive the downlink control information by being executable by the processor to: receive a grant of resources for the uplink transmission.
23. The apparatus of claim 19 , wherein the instructions are further executable by the processor to determine the transmission power for the UE by being executable by the processor to: determine the transmission power for the UE based at least in part on a maximum output power and the maximum power reduction.
This invention relates to wireless communication systems, specifically to methods for determining transmission power for user equipment (UE) in cellular networks. The problem addressed is optimizing UE transmission power to balance signal quality with power efficiency, ensuring reliable communication while minimizing interference and energy consumption. The apparatus includes a processor and memory storing instructions executable by the processor. The instructions configure the processor to determine the UE's transmission power based on a maximum output power and a maximum power reduction (MPR). The MPR accounts for factors like modulation scheme, bandwidth, and regulatory constraints, ensuring the UE operates within allowed power limits while maintaining signal integrity. The system dynamically adjusts transmission power to avoid excessive interference with neighboring cells or devices, improving overall network efficiency. The apparatus may also include additional features such as power control algorithms, signal quality monitoring, and adaptive modulation schemes. These components work together to dynamically adjust transmission parameters in real-time, optimizing performance under varying network conditions. The invention is particularly useful in dense urban environments or high-traffic scenarios where power management is critical for maintaining network stability and reducing energy waste.
24. An apparatus for wireless communication at a base station, comprising: a processor, memory coupled with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: determine an in-band emission (IBE) mask for a user equipment (UE), the UE being one of a plurality of UEs to be scheduled by the base station for uplink transmissions during a transmission time interval; transmit, to the UE, downlink control information that comprises an indication of the determined IBE mask that is mappable to a maximum power reduction for an uplink transmission by the UE; and receive the uplink transmission having a transmission power based on the maximum power reduction.
This invention relates to wireless communication systems, specifically addressing the challenge of managing in-band emissions (IBE) from user equipment (UE) during uplink transmissions to a base station. The apparatus at the base station includes a processor and memory storing instructions to determine an IBE mask for a UE, which is one of multiple UEs scheduled for uplink transmissions in a given transmission time interval. The base station transmits downlink control information to the UE, including an indication of the determined IBE mask. This mask is mapped to a maximum power reduction (MPR) value, which the UE applies to its uplink transmission power. The base station then receives the uplink transmission, which is adjusted according to the specified MPR. The system ensures that the UE's transmission adheres to spectral emission requirements while optimizing power efficiency and minimizing interference. The IBE mask selection and transmission process allows dynamic adjustment of power reduction based on network conditions, improving overall system performance.
25. The apparatus of claim 24 , wherein the instructions are further executable by the processor to determine the IBE mask for the UE by being executable by the processor to: identify a number of the plurality of UEs to be scheduled by the base station during the transmission time interval; and determine the IBE mask for the UE based at least in part on the identified number.
26. The apparatus of claim 24 , wherein the instructions are further executable by the processor to determine the IBE mask for the UE by being executable by the processor to: estimate a level of IBE interference during the transmission time interval; and determine the IBE mask for the UE based at least in part on the estimated level of IBE interference proportional to a number of the plurality of UEs scheduled by the base station for uplink transmissions during the transmission time interval.
27. The apparatus of claim 24 , wherein the instructions are further executable by the processor to: allocate frequency resources for the UE based at least in part on a position of the UE relative to at least one of the plurality of UEs, wherein the transmitted downlink control information indicates the allocated frequency resources.
28. The apparatus of claim 24 , wherein the instructions are further executable by the processor to: identify, from the plurality of UEs, a set of UEs associated with a receive beam of the base station, the UE being one of the set of UEs; and allocate frequency resources for the UE that are non-contiguous with frequency resources allocated to any other UE of the set of UEs.
This invention relates to wireless communication systems, specifically to managing frequency resource allocation in a base station serving multiple user equipment (UE) devices. The problem addressed is efficient frequency resource allocation to minimize interference and improve communication quality when multiple UEs share the same receive beam from the base station. The apparatus includes a processor and memory storing instructions that, when executed, perform specific functions. The processor identifies a group of UEs associated with a particular receive beam of the base station. Among these UEs, it selects one UE and allocates frequency resources to it in a way that ensures these resources are not contiguous with those allocated to any other UE in the same group. This non-contiguous allocation helps reduce interference between UEs sharing the same beam, improving signal integrity and overall system performance. The method ensures that frequency resources are distributed in a manner that avoids adjacent allocations, which can cause interference, particularly in scenarios where multiple UEs are served by the same beam. The solution is particularly useful in dense wireless networks where efficient resource management is critical to maintaining high-quality communication.
29. The apparatus of claim 24 , wherein the instructions are further executable by the processor to: identify that the UE and a second UE of the plurality of UEs are separated by an angular distance that is less than or equal to a predetermined threshold angular distance; and allocate, based at least in part on the identification, first frequency resources for the UE that are non-contiguous with second frequency resources allocated for the second UE.
30. The apparatus of claim 24 , wherein the instructions are further executable by the processor to: identify that the UE and a second UE of the plurality of UEs are separated by an angular distance that is greater than or equal to a predetermined threshold angular distance; and allocate, based at least in part on the identification, first frequency resources for the UE that are contiguous with second frequency resources allocated for the second UE.
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February 2, 2021
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